GOALI/Collaborative Research: Electrically-Enhanced Precision MicroRolling

GOALI/合作研究：电动增强精密微滚动

• 批准号: 1100787
• 负责人: Jian Cao
• 金额: $ 30.97万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-04-01 至 2016-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1100787&HistoricalAwards=false
• 关键词: GOALI; Collaborative; Research; Electrically; Enhanced

The research objective of this Grant Opportunity for Academic Liaison with Industry (GOALI) award is to significantly enhance the formability of thin sheet metals and the dimensional accuracy of formed features at the micrometer scale by integrating high-density electrical current with mechanical deformation through an instrumented desktop rolling mill. Two fundamental questions will be addressed in achieving the objectives: (1) how electrical current affects the plasticity and residual stress of metals subjected to deformation; and (2) how to realize in-process measurement for effective microrolling process control. The planned research tasks are: (1) Experimental characterization and constitutive modeling of material behavior subjected to mechanical and electrical loading; (2) Multi-physics modeling of mechanical stress, thermal and electro-magnetic fields in the microrolling process and mill structure; (3) In process sensing and data mapping for process characterization; and (4) System integration. If successful, the new hybrid process will reduce process design complexity, reduce energy consumption, and reduce chemical wastes in achieving thin metal foils with desired surface finish. The new sensing methods and instrument design will push the current limits of the rolling process in terms of size, precision, cost, and energy efficiency. One of the many uses of the metal foil is micro-electrodes and contacts for the next generation of bio-implants, such as pacemakers for treating heart disorders, deep brain simulation electrodes for potentially treating Parkinson?s disease, depression, dystonia or chronic pain, and artificial pancreas for monitoring and developing new therapeutics that regulate Type 1 Diabetes. Device miniaturization enabled by microrolling will benefit patients by improving their quality of life. The collaboration between academic institutions and industry will inspire the innovations and talents needed for U.S. manufacturing companies to remain competitive. The project will provide training to graduate and undergraduate students and practitioners through research opportunities, class projects, short courses, and internships.

该学术联络机构与行业联络（Goali）奖的研究目标是通过将高密度电流与机械变形通过仪器台式机滚动器整合到机械变形，从而显着提高薄板金属的形成性和形成功能的尺寸准确性。在实现目标时将解决两个基本问题：（1）电流如何影响经受变形的金属的可塑性和残余应力； （2）如何实现有效的微冻结过程控制的过程内测量。 计划的研究任务是：（1）经过机械和电气负载的材料行为的实验表征和本构建模； （2）在微冻结过程和磨机结构中机械应力，热磁场和电磁场的多物理建模； （3）用于过程表征的过程感应和数据映射； （4）系统集成。如果成功，新的混合过程将降低过程设计的复杂性，降低能耗，并减少具有所需表面饰面的薄金属箔时的化学浪费。新的传感方法和仪器设计将以尺寸，精度，成本和能源效率来推动滚动过程的当前限制。金属箔的众多用途之一是下一代生物植物的微电极和接触，例如用于治疗心脏病的起搏器，深脑模拟电极，用于治疗帕金森氏病，抑郁症，抑郁症，肌张力障碍，肌张力障碍或磨性疼痛或慢性疼痛，以及用于监测和开发新型型型的人造pance虫。 通过微胶卷来实现设备小型化，将通过改善患者的生活质量来使患者受益。学术机构与行业之间的合作将激发美国制造公司保持竞争力所需的创新和才能。该项目将通过研究机会，课堂项目，短期课程和实习来为研究生和本科生提供培训。